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    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>数组排序</title>
    <script>
        // 1. 翻转数组
        var arr = ['sd', 'fs', 'ff']
        console.log(arr.reverse()); 

        // 2.冒泡排序
        var arr1 = [23,21,43,53,35,6,7,34,77]
        arr1.sort(function(a,b) {
            return a - b;//升序
            // return b - a;//降序
        })
        console.log(arr1);
    </script>
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